---
key: mechanic/boss-fight-atlas--boss-fight-phase
type: mechanic
id: boss-fight-atlas--boss-fight-phase
lang: en
title: Fight phase
summary: An encounter state change switches a coherent package of rules.
updatedAt: '2026-10-22'
status: active
url: >-
https://gamemechanics.pro/en/knowledge/mechanic/boss-fight-atlas--boss-fight-phase/
jsonUrl: >-
https://gamemechanics.pro/api/v1/knowledge/en/mechanic/boss-fight-atlas--boss-fight-phase.json
markdownUrl: >-
https://gamemechanics.pro/content/knowledge/en/mechanic/boss-fight-atlas--boss-fight-phase.md
aliases: []
tags:
- Boss fights
- Structure and readability
sourceIds:
- source-57c861d2970c4d89
- source-fc88901a1e821d86
- source-c3b4a5407343c65d
- source-bd7f29d88bb94419
- source-672a1787af5dbc85
- source-945019fe5d82d809
- source-d60b74caa192cf71
sources:
- id: source-57c861d2970c4d89
title: 'Boss Fight Atlas: Fight phase (RU)'
url: 'https://polyakovin.github.io/boss-fight-atlas/ru/mechanics/fight-phase/'
verifiedAt: null
- id: source-fc88901a1e821d86
title: 'Boss Fight Atlas: Fight phase (EN)'
url: 'https://polyakovin.github.io/boss-fight-atlas/en/mechanics/fight-phase/'
verifiedAt: null
- id: source-c3b4a5407343c65d
title: Mora · Ori and the Will of the Wisps
url: 'https://www.youtube.com/watch?v=DvuB8cImPIg&t=233s'
verifiedAt: null
- id: source-bd7f29d88bb94419
title: Wally Warbles · Cuphead
url: 'https://www.youtube.com/watch?v=Ol3-4Y0eS9M&t=58s'
verifiedAt: null
- id: source-672a1787af5dbc85
title: 'Rennala, Queen of the Full Moon · Elden Ring'
url: 'https://www.youtube.com/watch?v=8wTLAgG3dX0&t=250s'
verifiedAt: null
- id: source-945019fe5d82d809
title: 'Boss Up: Boss Battle Design · GDC Vault'
url: 'https://www.gdcvault.com/play/1024921/Boss-Up-Boss-Battle-Design'
verifiedAt: null
- id: source-d60b74caa192cf71
title: Ori and the Will of the Wisps
url: 'https://www.youtube.com/watch?v=DvuB8cImPIg&t=403s'
verifiedAt: null
relations: []
placements:
- catalogId: boss-fight-atlas
id: boss-fight-phase
title: Boss fights
url: 'https://gamemechanics.pro/en/mechanics/boss-fight-atlas/#boss-fight-phase'
categoryIds:
- catalog-part-9
supersededBy: []
attributes:
preview:
updatedAt: '2026-10-22'
title: Fight phase
description: An encounter state change switches a coherent package of rules.
image:
src: images/mechanics/boss-frame-dvub8cimpig-403.webp
width: 1280
height: 720
game: Ori and the Will of the Wisps
sourceUrl: 'https://www.youtube.com/watch?v=DvuB8cImPIg&t=403s'
originalUrl: 'https://www.youtube.com/watch?v=DvuB8cImPIg'
sourceFrameSeconds: 403
credit: Moon Studios / Xbox Game Studios; gameplay capture by Gellot
rights: >-
Game graphics © Moon Studios / Xbox Game Studios. Gameplay recording by
Gellot. Visible source markings preserved. All rights reserved; excluded
from MIT and CC BY 4.0.
caption: A new section of Mora’s fight changes traversal space
alt: A new section of Mora’s fight changes traversal space
markers:
- x: 66
'y': 52
label: Mora’s body occupies a new section of the route
tips:
- >-
A phase change should visibly change the task rather than only the
health-bar color.
examples:
- title: Ori and the Will of the Wisps
url: 'https://www.youtube.com/watch?v=DvuB8cImPIg&t=403s'
endsAt: null
provenance: >-
Editorial reference index based on the 124 public Boss Fight Atlas mechanic
pages checked on 2026-10-20. Original concise RU/EN definitions by
gamemechanics.pro; source categories, game/boss associations and reference
URLs retained from the atlas. Linked materials retain their original rights;
references are upstream attributions, not independent verification.
license: CC-BY-4.0
codeLicense: MIT
attribution: gamemechanics.pro contributors
catalogKey: catalog/boss-fight-atlas
---
# Fight phase
id: boss-fight-atlas--boss-fight-phase
type: mechanic
key: mechanic/boss-fight-atlas--boss-fight-phase
lang: en
status: active
url: https://gamemechanics.pro/en/knowledge/mechanic/boss-fight-atlas--boss-fight-phase/
An encounter state change switches a coherent package of rules.
## At a glance
[Ori and the Will of the Wisps](https://www.youtube.com/watch?v=DvuB8cImPIg&t=403s) · Game graphics © Moon Studios / Xbox Game Studios. Gameplay recording by Gellot. Visible source markings preserved. All rights reserved; excluded from MIT and CC BY 4.0.
[Source recording](https://www.youtube.com/watch?v=DvuB8cImPIg), 403 s
1. Mora’s body occupies a new section of the route
- A phase change should visibly change the task rather than only the health-bar color.
- [Ori and the Will of the Wisps](https://www.youtube.com/watch?v=DvuB8cImPIg&t=403s)
## How it works
An encounter state change switches a coherent package of rules.
## Variants
### How the technique works
- An encounter state change switches a coherent package of rules.
## Context and limits
A concise reference to all 124 Boss Fight Atlas mechanics across its 14 source sections. Each entry includes a definition, full RU/EN lesson links, game references and further reading retained from the source. Animations and detailed rules remain in the atlas.
## Connected materials
## Sources and provenance
Editorial reference index based on the 124 public Boss Fight Atlas mechanic pages checked on 2026-10-20. Original concise RU/EN definitions by gamemechanics.pro; source categories, game/boss associations and reference URLs retained from the atlas. Linked materials retain their original rights; references are upstream attributions, not independent verification.
- [Boss Fight Atlas: Fight phase (RU)](https://polyakovin.github.io/boss-fight-atlas/ru/mechanics/fight-phase/) (id: source-57c861d2970c4d89)
- [Boss Fight Atlas: Fight phase (EN)](https://polyakovin.github.io/boss-fight-atlas/en/mechanics/fight-phase/) (id: source-fc88901a1e821d86)
- [Mora · Ori and the Will of the Wisps](https://www.youtube.com/watch?v=DvuB8cImPIg&t=233s) (id: source-c3b4a5407343c65d)
- [Wally Warbles · Cuphead](https://www.youtube.com/watch?v=Ol3-4Y0eS9M&t=58s) (id: source-bd7f29d88bb94419)
- [Rennala, Queen of the Full Moon · Elden Ring](https://www.youtube.com/watch?v=8wTLAgG3dX0&t=250s) (id: source-672a1787af5dbc85)
- [Boss Up: Boss Battle Design · GDC Vault](https://www.gdcvault.com/play/1024921/Boss-Up-Boss-Battle-Design) (id: source-945019fe5d82d809)
- [Ori and the Will of the Wisps](https://www.youtube.com/watch?v=DvuB8cImPIg&t=403s) (id: source-d60b74caa192cf71)
CC-BY-4.0 · gamemechanics.pro contributors